The main reason is that the data of various brokers are incompatible. At this time, the file servslist 1.dat will be automatically generated in the drvuser directory to record the data transmission method of Great Wisdom's first login. If you change the servers of other brokers in the middle, as long as the grid test is different, it will also be recorded in the file above, and the format is compatible. The login interface will not appear next time you start. . The solution is to delete the above files. . Only servers with the same format are kept in the proxy server list. . . If you start again, there will be no phenomenon that you can't start.